About this trial
We recruit community-dwelling older adults aged 50 and above for a 6-month intervention. Participants are divided into three groups:
Placebo Group, Low-Dose Group ( 6 mg/d Haematococcus pluvialis Astaxanthin), High-Dose Group (12 mg/d Haematococcus pluvialis Astaxanthin).
Peripheral blood samples and Other tests are collected at baseline, 3 months, and 6 months to measure mitochondrial function and oxidative stress levels.
Assessments include: 1.Cognitive \& Neurophysiological Assessment: Using the MoCA (Montreal Cognitive Assessmentscale) and ERP (specifically P300) monitoring. 2.Brain Imaging: MRI (Magnetic resonance imaging) is used to analyze changes in brain function. 3.Metabolomics: A series of laboratory techniques are used to analyze routine metabolic indices, plasma astaxanthin, mitochondrial function, oxidative stress markers, and cognition-related neurobiomarkers.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
None
Disqualifiers
None
Trial design
Parallel
Treatments tested in this trial
Low-Dose AST
Dietary supplementLow-Dose AST Group:6 mg/d Astaxanthin (Haematococcus pluvialis)
High-Dose AST
Dietary supplementHigh-Dose Group: 12 mg/d Astaxanthin (Haematococcus pluvialis)
Placebo
Other interventionPlacebo
Treatment groups
Trial outcomes
Primary outcomes
Montreal Cognitive Assessment, MoCA
The cognitive domains assessed included attention and concentration, executive function, memory, language, visual structural skills, abstract thinking, as well as calculation and orientation. The total score of the scale was 30 points.A total score of 26 or above is considered normal (as there is no current Chinese reliability and validity analysis, so the original foreign language threshold values can be temporarily referred to); a score of 19 to 25 indicates that there is a possibility of mild cognitive impairment (MCI); if the score is 19 to 22 and there is also some difficulty in daily life/activities, it usually means that the person has progressed from MCI to dementia; those with a score below 19 can clearly be diagnosed as having dementia.
Neurophysiology changes
The event-related potential (ERP) P300 was used to track the changes of the brain's neural electrophysiology during the cognitive process.Patients with cognitive decline and Alzheimer's disease show an extended P300 latency period.
Secondary outcomes
MRI(Magnetic resonance imaging)
The Siemens Trio 3T MRI system was used to acquire imaging data, including T1-weighted structural and resting-state functional scans as well as T2w-FLAIR images.The common local brain structural changes associated with cognitive decline are the atrophy of the hippocampus and the entorhinal cortex.
Locations
Sponsors and contacts
Click on the lead sponsor to view all of their trials.
This trial is not recruiting at the moment. You can still explore other options: